Is IPv6 enable on LAN? Along with Automatic Outbound NAT, the system would automatically generate some NAT rules on WAN… and maybe cause this when it looks for a way out for IPv6.
Or do you still have any rules that specify IPv6 protocol?

Is IPv6 enable on LAN? Along with Automatic Outbound NAT, the system would automatically generate some NAT rules on WAN… and maybe cause this when it looks for a way out for IPv6.
Or do you still have any rules that specify IPv6 protocol?

Ok I did what you told me to do, removed IP6 static ip from LAN, removed all IP6 rules and disabled IP6 in System->Advanced->Networking.
Even changed the "DOWN" monitoring of the gateway back from 60sec to de default 10sec.

Now ALL the messages are gone, even the OpenVPN messages and gateway timeouts are gone as well!